linux-kernel - [PATCH 1/2] ARM: dump: Convert to use DEFINE_SHOW

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Date:   Wed, 13 Jun 2018 09:11:55 +0800
From:   Peng Donglin <dolinux.peng@...il.com>
To:     catalin.marinas@....com, will.deacon@....com
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Peng Donglin <dolinux.peng@...il.com>
Subject: [PATCH 1/2] ARM: dump: Convert to use DEFINE_SHOW_ATTRIBUTE macro

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Signed-off-by: Peng Donglin <dolinux.peng@...il.com>
---
 arch/arm/mm/ptdump_debugfs.c | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/arch/arm/mm/ptdump_debugfs.c b/arch/arm/mm/ptdump_debugfs.c
index be8d87b..79002fe 100644
--- a/arch/arm/mm/ptdump_debugfs.c
+++ b/arch/arm/mm/ptdump_debugfs.c
@@ -11,18 +11,7 @@ static int ptdump_show(struct seq_file *m, void *v)
 	ptdump_walk_pgd(m, info);
 	return 0;
 }
-
-static int ptdump_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, ptdump_show, inode->i_private);
-}
-
-static const struct file_operations ptdump_fops = {
-	.open		= ptdump_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(ptdump);
 
 int ptdump_debugfs_register(struct ptdump_info *info, const char *name)
 {
-- 
2.7.4